A Joint Analysis and Optimization Method for the Static and Dynamic Characteristics of Gearbox Boxes in Rail Transit Vehicles

Abstract

The present invention mainly solves the problem that the existing technology generally only optimizes one of the static characteristics or dynamic characteristics, fails to fully consider the two characteristics of the box body, pays too much attention to light weight in the box structure optimization process, and does not fully optimize the box structure The problem of static and dynamic characteristics of the gearbox for rail transit vehicles provides a joint analysis and optimization method for the static and dynamic characteristics of the gearbox for rail transit vehicles, comprehensively analyzes the static and dynamic characteristics of the gearbox for rail transit vehicles On the basis of a comprehensive analysis of the static and dynamic characteristics of the box, through two topology optimizations, not only the mechanical properties of the gearbox box under complex working conditions are improved, but also the multi-order natural frequency of the box is improved. , Avoid resonance, significantly improve the safety, reliability and vibration characteristics of the box, and have positive significance for improving the performance of rail transit vehicles.

Description

technical field [0001] The invention relates to the field of gearbox design, in particular to a combined analysis and optimization method for static and dynamic characteristics of a gearbox casing. Background technique [0002] Gearbox is an important basic component in rail transit vehicles, which plays the role of speed change and torque change. Rail transit vehicle gearboxes are subject to non-constant heavy loads and severe vibrations during high-speed operation, and are prone to failures such as box cracking. According to statistics, more than half of the mechanical failures of rail transit vehicles come from gearboxes, and the reliability of the gearbox structure has a huge impact on rail transit vehicles. [0003] At present, there is no optimization method for the gearbox box of rail transit vehicles at home and abroad. The prior art most closely related to the invention of the present invention is mainly an optimization method for general industrial product boxes....

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the problem that the existing technology generally only optimizes one of the static characteristics or dynamic characteristics, fails to fully consider the two characteristics of the box body, pays too much attention to light weight in the box structure optimization process, and does not fully optimize the box structure The problem of static and dynamic characteristics of the gearbox for rail transit vehicles provides a joint analysis and optimization method for the static and dynamic characteristics of the gearbox for rail transit vehicles, comprehensively analyzes the static and dynamic characteristics of the gearbox for rail transit vehicles On the basis of a comprehensive analysis of the static and dynamic characteristics of the box, through two topology optimizations, not only the mechanical properties of the gearbox box under complex working conditions are improved, but also the multi-order natural frequency of the box is improved. , Avoid resonance, significantly improve the safety, reliability and vibration characteristics of the box, and have positive significance for improving the performance of rail transit vehicles

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